# Data-Types in javascript.

# Data-Types
JavaScript is a loosely typed scripting language and over a time Javascript variables can receive different data types.
A data type in a language defines the type of data variable that can hold. Data type basically typed data that can be used and manipulated in a program.

![200.gif](https://cdn.hashnode.com/res/hashnode/image/upload/v1669199159323/A5q-t-kx_.gif align="left")

The latest ES6 standard defines the following data type: out of which 6 data types are **primitive**

### Numbers
It represents both integers and floating-point numbers.
EX- 4,6,7,4.6,94.9

```
let num = 2;
let count = 93.2;
``` 
### String
A string is a sequence of characters. In Js, string can be enclosed within the single and double quotes.
EX-

```
let name = Anurag;
let teacher = Hitesh;
``` 
### Boolean
 It represents the logical entity and can have two values true or false.

```
let login = true;
let Count = false;
``` 
### Null
this type has one value:  Null
***We discuss null in the next article***
 
### Undefined
A variable that has not been assigned a value is undefined.

### Symbol
Introduced in ES6.
Unlike other primitive data type,  it does not have any literal form. It is a built-in object whose constructor returns a symbol that is unique.

To check the data types-

```
let x = 3;
console.log(typeof x);
``` 
EX-

```
Let firstName = 'vikas';
let lastName = 'singh';
const email = 'vikas828@gmail.com';
let mobNum = 980989898;
let pass = ''328dhdhw8"
let login = true;

console.log(typeof firstName);
console.log(typeof lastName);
console.log(typeof email);
console.log(typeof login);
``` 
EX-

```
let x = 10;
``` 
Here, let = keyword and x = variable and 5 is a value
***here 5 is assign to x it it is hold 5 with help of =  operator***

**Note**
You can store multiple data types in an array.

```
let arr1 = ['vik', 'sik', 'liv', 'singh'];
```